Což takhle dát si špenát (in English: "How About a Plate of Spinach") is a 1977 Czechoslovak comedy science fiction film directed by Václav Vorlíček.
The film was based on a script by his trusted collaborator Miloš Macourek.
The title song, with lyrics by F. R. Čech, is sung by Jiří Schelinger.
Actress Iva Janžurová played a dual role in the film, portraying both František Liška's wife, Libuše, and his daughter, Marcelka.
After an exit from prison they are employed in a lab inventing a device for regeneration of old cows.